Final answer:
To find the components of the reaction at the roller support A and fixed support B, we need to resolve the tension vectors into their horizontal and vertical components. We can then add these components to find the resultant vector.
Step-by-step explanation:
To determine the horizontal and vertical components of the reaction at the roller support A and fixed support B, we need to resolve the tension vectors into their horizontal and vertical components. First, we find the components of A and B along the x- and y-axes using the given information and trigonometric functions. Then, we add the horizontal and vertical components of each vector to find the components Rx and Ry of the resultant vector, R.